My latest test system includes a Kerberos server that uses OpenLDAP
via IPC as its back-end database. It usually works, but not always.
For example, recently, after failing to get kadmin to add a new
principal to the Kerberos database, I found this error in the
provider's syslog:

545 and 745u!? A restart of the Kerberos servers didn't make a
difference, although restarting slapd brought these values down to 8
and 9u respectively. However, I have no idea what caused these numbers
to rise. See my provider/master server's config files below.

Does anyone have an idea what might be going on and how I might
prevent this situation from occurring again?